JP3047526B2 - Connection structure between tape wire and fork-shaped electrical connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between a round conductor of a tape wire and a fork-shaped electric connector.
The width of the contact portion of the electric wire is increased without increasing the width (plate thickness) of the fork-shaped electric connector, and the contact stability with the round conductor is achieved.

[0002]

2. Description of the Related Art Recently, a tape electric wire 10 as shown in FIG.
This tape wire can be used as an internal wiring material for which ultra-thin wires and narrow pitch wires can be achieved, so that home appliances such as VTRs and video cameras, OA equipment, etc. are desired to be light and thin. It can be suitably used.

The above-mentioned tape wire 10 is, for example, a tape 1
A large number of conductors 4 are arranged side by side, for example, the diameter D of the conductor 4 is 0.12 mm, and the pitch P between the conductors is 0.8 mm.

[0004] As described above, the connection between the large number of conductors 4 arranged in parallel with the tape wire 10 and the electric connector is shown in FIGS.
As shown in FIG. 4, a fork-shaped electric connector 7 is inserted from one end into an electric connector insertion hole 6a provided in parallel with the connector housing 6, and the connector housing 6
After the tape electric wire 10 is inserted through the electric wire insertion opening 6b opened to the other end of the connector housing 6, the retainer 8 is inserted into the connector housing 6.
Is inserted, and the conductor exposed portion 4a of each conductor 4 is
In contact with the wire contact portion 7a.

[0005]

In the tape wire 10, as described above, the wire pitch and the diameter of the wire are extremely small, so that the pitch of the electric connector and the width W of the wire contact portion are extremely small. Become. The wire pitch, the pitch of the electric connector, the wire width, and the width of the wire contact portion are accurate, and the wire center of the wire and the wire center of the wire contact portion completely match each other. In this case, the problem of poor contact does not occur. However, if there is any variation in each dimension, as shown in FIG. 16, the error between the wires to be sequentially contacted in parallel and the wire contact portion gradually increases, resulting in poor contact.

For example, it is necessary to allow for variations in the pitch dimension between the wires 4 of the tape wire 10, and furthermore, variations in the cutout size of the tape wire 10, and also variations in the pitch and the wire contact portion on the electrical connector side. It is necessary to allow for variations in width. In view of all of the above variations, the required width of the wire contact portion of the electric connector is widened, and if it is narrow, the contact becomes unstable.

In order to stabilize the contact state, the width of the wire contact portion may be widened. However, when the electric connector has a fork shape as shown in FIG. 7 is equal to the thickness (W). Therefore, increasing the thickness of the electrical connector solves the problem, but increasing the thickness of the electrical connector necessitates a reduction in the thickness of the partition wall of the connector housing. Difficult from.

In order to stabilize the contact state, there is a method in which the conductor of the electric wire is made to have a foil shape to increase the area of the contact portion of the electric wire contact portion to improve the contact stability. In this case, the number of steps of arranging the conductor foils at a predetermined pitch and connecting the foils to the wires increases, which causes problems in cost, technology, and the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is intended to increase only the width of a wire contact portion without increasing the thickness of an electrical connector and to improve the reliability of contact between a tape wire and a conductor (wire). The purpose is to improve the performance.

[0010] In order to achieve the above object, the present invention is to insert a fork-shaped electric connector from one end side into an electric connector insertion hole provided side by side in a connector housing.
A number of ultra-fine round conductors with a diameter of 0.12 mm on the tape and a number of tape wires arranged in parallel with a narrow pitch of 0.8 mm between conductors are inserted through the wire insertion opening at the other end of the connector housing. And inserted between the upper and lower arms of the fork-shaped electric connector which are vertically opposed and linearly protruded, and further, a retainer is inserted through the electric wire insertion opening to press the upper arm of the electric connector. Then, an electric wire contact portion formed at the tip of the upper arm of each electric connector is brought into contact with each round conductor of the tape electric wire, and the fork-shaped electric connector is formed by punching a conductive material. The whole arm has the same thickness, and a bent portion having the same shape as the wire contact portion is provided integrally with the wire contact portion of the upper arm when punching a conductive material in advance. To the wire contact area A tape wire and a fork, wherein the tape wire and the fork are overlapped in the width direction and integrated by a press, and the contact surface of the tape wire with the round conductor is double the sheet thickness by overlapping the punched cut surface. The present invention provides a connection structure for an electric connector. That is, only the width of the wire contact portion is increased without increasing the thickness of the plate forming the electrical connector.

[0011]

[0012]

[0013]

The fork-shaped arm is formed integrally with the fork-shaped arm in advance.
Alternatively, the bent portion is provided so as to protrude to one of the right and left sides, and the bent portion is bent so as to be adjacent to the wire contact portion in the width direction, and then integrated into a required shape by pressing.

[0015]

[0016]

As described above, according to the present invention, in the fork-shaped electric connector having the same thickness as a whole, only the width of the wire contact portion can be increased without increasing the thickness. Even if there is some variation in the width and pitch of the connector and the width and pitch of the conductor of the tape wire, it is possible to ensure the contact between the electrical connector and the wire and improve the contact reliability. Can be done.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. 1 to 3 show a first embodiment of the present invention. The fork-shaped electric connector 11 shown in FIG.
The fork-shaped electric connector 7 shown in FIG.
It is formed by further improving the wire contact portion.

The electric connector 11 is formed by punching a conductive material (copper alloy or the like) having a thickness W, and as shown in the drawing, upper and lower arms 12 and 13 projecting substantially linearly, and these arms 12 A vertical connecting portion 14 connecting one end of the
A contact terminal portion 15 protruding from an upper end of the connecting portion 14; and a conductor exposed portion 4a and an electric wire contact portion 20 on an upper end surface of the lower arm portion 13 sandwiching the tape wire 10 between the upper and lower arm portions 12, 13. While making contact, the contact terminal portion 15 is connected to the substrate.

That is, as shown in FIG. 2, the electric connector 11 has the arm portions 12 and 13 inserted into the electric connector insertion holes 17 of the connector housing 16, and the contact terminal portions 15 protrude from the connector housing 16. In this state, the plurality of electrical connectors 11 are assembled to the connector housing 16 integrally in a parallel state. The electrical connector 11
The tape wire connected to the tape wire 1 shown in FIG.
0, and the terminal of the tape wire 10 is inserted into the electrical connector insertion hole 17 through the wire insertion opening 19 formed in the other end of the connector housing 16, and the upper and lower arm portions 12 are inserted.
The conductor 4 is positioned between the
Is inserted into and attached to the connector housing 16, and the upper arm 12 is pushed down by the retainer 18. The exposed portion 4a of the conductor 4 is exposed downward, so that the conductor exposed portion 4a comes into contact with the wire contact portion 20 on the upper end surface of the lower arm portion 13.

As shown in FIGS. 1 and 3, in order to increase the area in the width direction of the wire contact portion 20 to be brought into contact with the conductor exposed portion 4a and to improve the contact reliability with the conductor 4,
The upper end surface of the lower arm portion 13 is provided with notches 21 at a predetermined interval from one end to the other end in the length direction (that is, from the connection side to the protruding end), and each portion 22 sandwiched between the notches 21 is The right and left sides R and L in the width direction are alternately projected and projected on both sides. The width W ′ of the wire contact portion 20 is larger than the plate thickness W due to the above-described protrusion on both sides in the width direction.

As described above, without increasing the thickness of the electrical connector 11, only the width of the wire contact portion 20 can be widened to the extent that the contact with the wire can be stabilized. Therefore, the thickness of the partition wall of the connector housing does not need to be the wall corresponding to the wire contact portion, and the other portions do not need to be thinner than in the past, and the strength can be maintained.

FIG. 4 shows a modification of the first embodiment. Instead of cutting and punching the wire contact portion 20, the upper portion 13a of the arm portion 13 is simply sequentially moved in the length direction in the left-right width direction. The arms 13 are alternately stamped on both sides, that is, the upper part of the arm portion 13 is formed in a wavy shape. By alternately embossing in the left-right width direction as described above, it is possible to very easily widen only the width of the wire contact portion 20 as in the first embodiment. The same applies to the arm 12 on the wire contact side.

FIGS. 5 to 7 show an embodiment of the present invention, in which only the width of the electric wire contact portion 20 of the electric connector 11 is expanded to about twice as large as the other width. In the electrical connector 11 of the present embodiment, of the upper and lower arms 12 and 13, the electric wire contact portion is on the lower end surface side of the upper arm 12 and the upper arm 1.
The distal end side of the lower end surface of 2 is an electric wire contact portion 20.

As shown in FIGS. 7 (a) and 7 (b), the electric wire contact portion 20 is used to cut out the fork-shaped electric connector 11 from a plate material having a thickness W. Only the tip portion 12a is punched by forming a bent portion 25 having the same shape as the tip portion 12a from the upper end thereof. The bent portion 25 is bent so as to be adjacent to the width direction of the tip portion 12a, and then pressed to adjust the shape, and the tip portion 12a and the bent portion 25 are integrally fixed.

As described above, the width of the wire contact portion 20 is increased to twice the thickness of the wire by bending the previously bent portion only at the wire contact portion 20 and then pressing the bent portion. can do. After the shape is adjusted, bending may be performed.

FIGS. 8 to 10 show a second embodiment of the present invention, wherein the electric wire contact portion 20 of the electric connector 11 is not enlarged in width itself, but is an upper arm portion serving as the electric wire contact portion 20. 12 is bent to one of the left and right sides to have an action substantially corresponding to an increase in the width of the wire contact portion 20.

That is, the wire contact portion 20 having the same width as the plate thickness W
Is bent to one side in the width direction, as shown in FIG. 9 and FIG. 10, the width that can be brought into contact with the conductor 4 can be increased from W to W ′. It is preferable that the entire exposed portion 4a of the conductor 4 is in contact with the wire contact portion 20 of the electric connector 11, but it is not always essential, and it is sufficient if a portion of the exposed portion 4a contacts the wire contact portion 20. FIG.
As shown in (1), there is an advantage that the center portion of the conductor 4 can be brought into contact with the wire contact portion 20 even if the conductor 4 is shifted left and right.

[0028]

As is apparent from the above description, in the fork-shaped electrical connector for connection with the round conductor juxtaposed to the tape electric wire according to the present invention, the overall thickness of the electrical connector is increased. In addition, since only the width of the wire contact portion is widened, contact stability with the wire made of a round conductor can be achieved, and the problem with the partition wall from the connector housing can be cleared.

[0029]

[Brief description of the drawings]

FIG. 1 is a perspective view of an electric connector according to a first reference example of the present invention.

FIG. 2 is a cross-sectional view showing a connection state between an electric connector and a tape wire according to a first reference example.

FIG. 3 is a view showing a state in which the width of a wire contact portion of the first embodiment is widened.

FIG. 4 is a perspective view of an electric connector showing a modification of the first embodiment.

FIG. 5 is a perspective view of an electric connector according to the embodiment of the present invention.

FIG. 6 is a cross-sectional view similar to FIG. 2, showing a connection state between the electrical connector and the tape wire of the embodiment.

7A is a drawing showing a processing step of a bent portion, and FIG. 7B is a drawing showing a cross section of FIG.

FIG. 8 is a perspective view of an electric connector according to a second reference example.

FIGS. 9 (a) and 9 (b) are diagrams for comparing the state of widening of the electric wire contact portion of the second embodiment with that of the related art.

FIG. 10 is a schematic diagram showing a contact state between an electric connector and an electric wire according to a second reference example.

FIG. 11 is a plan view of the tape electric wire.

FIG. 12 is a drawing showing a relationship between an electric connector and a conductor of a tape electric wire.

FIG. 13 is a cross-sectional view showing a connection state between the electric connector and the tape wire.

FIG. 14 is a perspective view of a conventional fork-shaped electric connector.

FIG. 15 is a drawing showing the relationship between the round conductor of the tape wire and the width of the wire contact portion of the electrical connector.

FIG. 16 is a schematic view showing a conventional problem.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-114776 (JP, A) JP-A-4-206175 (JP, A) JP-A-60-9174 (JP, U) JP-J29-29 10408 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) H01R 13/11 H01R 12/08 H01R 12/28

Claims (1)

(57) [Claims] 1. A fork-shaped electric connector is inserted from one end side into an electric connector insertion hole juxtaposed with a connector housing, and a superconducting round conductor having a diameter of 0.12 mm is taped on a tape. A large number of tape wires arranged in parallel with a narrow pitch of 0.8 mm between conductors are inserted through the wire insertion opening at the other end of the connector housing, and the fork-shaped electric connectors are vertically opposed to each other. The upper arm of each electric connector is pressed by inserting a retainer through the electric wire insertion opening, and the electric wire formed at the tip of the upper arm of each electric connector is inserted. The contact portion is in contact with each of the round conductors of the tape wire, and the fork-shaped electrical connector is formed by punching a conductive material and has the same thickness as a whole. The tactile portion, may be provided integrally with the case of pre-stamping of conductive material bent portion of the electric wire contact portion having the same shape,
The bent portion is overlapped with the electric wire contact portion in the width direction and integrated by pressing, and the contact surface of the tape electric wire with the round conductor is made twice as thick as the stamped cut surface is overlapped. A connection structure between a tape electric wire and a fork-shaped electric connector.